The presence sensor should provide qualitative information, whether some phenomenon has occurred, with a definite answer - YES/NO. Seemingly simple task, yet with a refined background providing reliability, innovation, and precision.
Standard presence sensors mainly detect the motion of large objects, such as human bodies, like an automatized motion sensor light or a door. They could function on different physical principles, such as detecting heat, microwave, or infrared signals. However, the MicroWire sensor introduces a different principle: magnetism.
MicroWire, as a sensor based on magnetic principles, is a passive sensor, capable of providing information via magnetic field even through other objects up to a distance of a few centimeters. Thanks to its micro-dimensions, it can be placed anywhere - there is always space for a MicroWire. It is resistant to aggressive chemical environments and thanks to its passive nature it can be incorporated inside the products or materials without creating any flaw. These possibilities represent a game-changer for monitoring the presence of objects in various even dangerous environments.
The MicroWire can serve as a safety-critical part, in other words, a presence checker. If an object equipped with the MicroWire comes into the vicinity of the sensing device, the unique signal from the MicroWire will be detected. The detection information can be sent to a user via Wi-Fi, cloud, Bluetooth, or other user-demand possibilities.
The detection via magnetism can also work in the other way. An object equipped with MicroWire could be detected 24/7 while notifying the user only if the obtained signal from the MicroWire is changed - meaning the status of the object changed. The possibilities for MicroWire utilization as a presence sensor are vast, while RVmagnetics will gladly help you find a tailor-made solution for your unique presence detection issue.
Contactless presence sensing with Real-Time Monitoring
Sensoric application of glass-coated magnetic microwires
R. Jurc, L. Frolova, D. Kozejova, L. Fecova, M. Hennel, L. Galdun, K. Richter, J. Gamcova, P. Ibarra, R. Hudak, I. Sulla, D. Mudronova, J. Galik, R. Sabol, T. Ryba, L. Hvizdos, P. Klein, O. Milkovic, Z. Vargova, R. Varga
The glass-coated microwires are unique materials for construction of modern miniaturized contactless sensors. They offer few advantages like extremely high added value, small dimensions, biocompatibility, and many others. Within this chapter, the overview of sensor application for monitoring the temperature, stress, magnetic field, gas concentration, and many others is offered. Finally, some new compounds for using the microwires as mechanical actuators and coolers is shown.
Thanks to the micro-dimensions of the sensor, it can be incorporated inside of the products, making it invisible to the human eye. However, thanks to its magnetic properties, it can be visible via the provided sensing device, informing the user about the presence of the sensor inside of the object immediately.
Conclusion:
MicroWire represents a unique solution for presence detection via magnetism in dangerous, explosive, or spatially limited environments, with a tailor-made solution unique to each customer. The simplest utilization of any MicroWire (YES/NO answer) can bring the most complex information with added value to various physical phenomena.